The Atkins diet, as it's frequently called, does often work. But, it's really unhealthy. You shouldn't do this forever, only in limited bursts.

Humans have a physiological aversion to the very idea of eating less, evolution baked it into our bones. Because of this, there's a lot of money in books, articles, and videos that offer weight loss alternatives that don't involve consuming fewer calories.

But, what makes us fat is eating more calories than we use. You can get fat on a high carb diet. You can also get fat on an all protein diet, though not as easily.